#define _CRT_SECURE_NO_WARNINGS 1

#include<iostream>
#include<cmath>
using namespace std;

int main()
{
	double a;
	char b;
	cin >> a >> b;

	int ret = 0;

	if (a <= 1)
	{
		ret += 20;
	}
	else
	{
		ret += 20;
		a -= 1;
		ret += ceil(a);
	}

	if (b == 'y')
	{
		ret += 5;
	}

	cout << ret << endl;

	return 0;
}